package com.xiaolun.netty.codec;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;

public class NettyClientHandler extends ChannelInboundHandlerAdapter {

	//当通道就绪就会触发该方法
	@Override
	public void channelActive(ChannelHandlerContext ctx) throws Exception {
		//发生一个Student 对象到服务器（产生一个实例）
		StudentPOJO.Student student = StudentPOJO.Student.newBuilder().setId(4).setName("智多星 吴用").build();
		//Teacher , Member ,Message
		ctx.writeAndFlush(student);
	}

	//当通道有读取事件时，会触发
	@Override
	public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
		ByteBuf buf = (ByteBuf) msg;
		System.out.println("服务器回复的消息:" + buf.toString(CharsetUtil.UTF_8));
		System.out.println("服务器的地址： " + ctx.channel().remoteAddress());
	}

	@Override
	public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
		cause.printStackTrace();
		ctx.close();
	}
}
